Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 904 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) use a new load each time
2. 2.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change lots at once (d) skip writing results
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 410 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
7. 7.True or false: to change lots at once is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) repeat each test
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design B (c) design A
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
16. 16.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
17. 17.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
20. 20.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
22. 22.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) hide a failed test (d) test it only once
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) hide a failed test (d) repeat each test
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
27. 27.True or false: to measure the same way is good testing. (a) False (b) True
28. 28.True or false: to change only one thing is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.True or false: to change only one thing is good testing. (a) False (b) True
32. 32.True or false: to guess, do not measure is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
34. 34.True or false: to skip writing results is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
37. 37.True or false: to hide a failed test is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 340 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change lots at once (d) change only one thing
40. 40.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 170 g. What is the mean (average) load it held, in grams?

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